ENERGY AND ELECTRICITY

It shows how much energy going in, how much useful energy comes out and how much energy is wasted.

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How is the useful and wasted energy shown on a sanki diagram?

The useful energy goes horizontally, the wasted goes downwards and all the energy imputed is shown on the left.

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What is energy measured in?

Joules (J)

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Name the types of active energy.

Light, sound, electrical, kinetic (movement), thermal (heat).

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Name the types of stored energy.

Chemical, gravitational and strain (elastic).

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What is stored energy?

They have the potential to cause something.

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What is current?

The flow of charge.

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What is current measured using?

An ammeter.

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What is voltage?

The difference in electrical energy between two points.

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What is resistance?

The resistance in current.

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What happens to the current in a series circuit?

The current remains the same.

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What happens to the current in a parallel circuit?

The current splits.

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How do you find the resistance?

Voltage dived by current.

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What happen to the voltage in a series circiut?

The voltage splits between the bulbs.

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What happens to the voltage in a parallel circuit?

The voltage stays the same.

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Give an example of an energy transfer system.

Electrical - light bulb - thermal and light energy

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What is the general energy transfer system?

Energy input + process + energy output

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What are the steps of a power station?

1. the fuel is burned to boil water to make steam. 2. the steam makes a turbine spin. 3. he spinning turbine turns a generator which produces energy. 4. the electricity goes to the transformers to produce the correct voltage.